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 National Security Agency surveillance |
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XKeyscore (XKEYSCORE or XKS) is a secret computer system used by the United States National Security Agency (NSA) for searching and analyzing global Internet data, which it collects in real time. The NSA has shared XKeyscore with other intelligence agencies, including the Australian Signals Directorate, Canada's Communications Security Establishment, New Zealand's Government Communications Security Bureau, Britain's Government Communications Headquarters, Japan's Defense Intelligence Headquarters, and Germany's Bundesnachrichtendienst. Also Danish Intelligence Agency, which proceeded to use it on spying on UK, and Germany's prime ministers amongst other key-allies for the US.[1][2][3][4]
In July 2013, Edward Snowden publicly revealed the program's purpose and use by the NSA in The Sydney Morning Herald and O Globo newspapers. The code name was already public knowledge because it was mentioned in earlier articles, and, like many other code names, it appears in job postings and online résumés of employees.[5][6]
On July 3, 2014, German public broadcaster Norddeutscher Rundfunk, a member of ARD, published excerpts of XKeyscore's source code.[7][8]
- ^ Henley, Jon (May 31, 2021). "Denmark helped US spy on Angela Merkel and European allies – report". Archived from the original on May 31, 2021. Retrieved June 15, 2025.
- ^ Davies, Harry (October 2, 2023). "Scandinavian spy drama: the intelligence chief who came under state surveillance". Archived from the original on October 2, 2023. Retrieved June 15, 2025.
- ^ Bjørnager, Jens; Nielsen, Jens; Jensen, Henrik; McGhie, Steffen; Andersen, Simon (September 13, 2020). "Et pengeskab på Kastellet har i årtier gemt på et dybt fortroligt dokument. Nu er hemmeligheden brudt" [A safe at Kastellet has been hiding a highly confidential document for decades. Now the secret has been broken]. Archived from the original on September 13, 2020. Retrieved June 15, 2025.
- ^ Seipel, Hubert (January 26, 2014). "Snowden Interview: Transcript". Norddeutscher Rundfunk. p. 3. Archived from the original on January 28, 2014. Retrieved May 6, 2019.
- ^ Greenwald, Glenn; Ackerman, Spencer (June 27, 2013). "How the NSA Is Still Harvesting Your Online Data – Files Show Vast Scale of Current NSA Metadata Programs, with One Stream Alone Celebrating 'One Trillion Records Processed'". The Guardian. Archived from the original on August 4, 2013. Retrieved August 5, 2013.
{{cite news}}: CS1 maint: multiple names: authors list (link) - ^ Layne, Ken (June 18, 2013). "Job Networking Site LinkedIn Filled With Secret NSA Program Names". Archived from the original on December 8, 2017. Retrieved August 6, 2013.
- ^ "xkeyscorerules100". Panorama. ARD (broadcaster). July 3, 2014. Archived from the original on July 7, 2014. Retrieved July 4, 2014.
- ^ Cite error: The named reference
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